EFFECT OF HEAT STRESS ON VARIATION IN PARENTAL LINES AND THEIR Fl HYBRIDS IN WHEAT: A COMPARISON

Abstract

The question whether the selection practiced in an optimum environment will hold valid under stress condition also, or vice versa, formed the basis of this study. Eight wheat pure lines and their 28 hybrids were exposed to heat stress during two different growth phases and the effectonvariation observed. It is suggested that selection should.be practiced under the same conditions wherein their use is intended.